Synonyms: Rifamycin B dimethylpropylhydrazide;NSC 144131;BRN 5418580;NCI 144-131;17607-49-7;Acetic acid, ((1,2-dihydro-5,6,17,19,21-pentahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-2,7-(epoxypentadeca(1,11,13)trienimino)naphtho(2,1-b)furan-9-yl)oxy)-,2,2-dimethyl-1-propylhydrazide, 21-acetate;Rifamycin, 4-O-(2-(2,2-dimethyl-1-propylhydrazino)-2-oxoethyl)-;Rifamycin, 4-O-[2-(2,2-dimethyl-1-propylhydrazino)-2-oxoethyl]-;LS-11773;Rifamycin B, 2,2-dimethyl-1-propylhydrazide;Rifamycin, 4-O-(2-(2,2-dimethyl-1-propylhydrazino)-2-oxoethyl)- (9CI)